What is the word origin of hemorrhoid?

Answer:

This word is a compound of Greek elements: haimo- (blood), -rhea (flow) and -oid (looks like).

in addition:

From Middle English emoroides, hemorrhoids, from Old French emoroides, from Latin haemorrhoidae, from Greek haimorrhoïdes, pl. of haimorrhoïs, from haimorrhoos, flowing with blood : haimo-, hemo- + rhein, to flow